Vice President JD Vance on Thursday told reporters that Washington was “not there yet” with Iran on ‌an agreement but that ​the parties were close, adding that the U.S. was in ⁠a position where it could substantially ​set back Tehran’s nuclear program.

The United States ⁠and Iran reached an agreement on Thursday to extend their ceasefire and lift restrictions ‌on shipping through the Strait ​of Hormuz, pending ‌U.S. President Donald Trump’s approval, sources told Reuters.

Vance ‌said there were a couple of sticking points in talks with Tehran ⁠concerning its enriched ‌uranium stockpile ⁠and the question of enrichment.

“It’s hard to say ⁠exactly ⁠when or if the president is going to sign ‌the MOU. We’re going back and forth on a couple of language points,” ‌Vance ​said.

“I can’t ‌guarantee that we’re going to get there, but right now I ​feel pretty good about it,” he said.